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Texas Instruments LM4132EMF-2.0/NOPB
- Part No.:
- LM4132EMF-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM4132EMF-2.0/NOPB.pdf
- Description:
- IC VREF SERIES 0.5% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,376
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Product details
Overview
LM4132EMF-2.0/NOPB from Texas Instruments is a precision low-dropout (LDO) series voltage reference IC delivering a stable 2.048 V output with ±0.05% initial accuracy (A-grade), 10 ppm/°C temperature coefficient (0°C to 85°C), and 60 µA quiescent current - used in high-resolution ADC/DAC biasing, portable instrumentation, and battery-powered test equipment where tight voltage stability and low power are critical.
For engineers reviewing the LM4132EMF-2.0/NOPB datasheet, LM4132EMF-2.0/NOPB pinout, LM4132EMF-2.0/NOPB application, or LM4132EMF-2.0/NOPB equivalent, key selection factors include its SOT-23-5 package, enable-controlled shutdown (3 µA), 20 mA output drive capability, dropout as low as 175 mV at 10 mA, and compatibility with ceramic capacitors without requiring an output buffer.
Technical Context
The LM4132EMF-2.0/NOPB implements a CMOS band-gap architecture with EEPROM-based curvature and tempco correction, enabling laser-trimmed-level precision in cost-effective plastic packaging. Its internal topology eliminates need for external output capacitance while supporting up to 20 mA load current - unlike traditional shunt references that idle full load current at no load.
It features an active-high enable pin (VIH = 65% VIN, VIL = 35% VIN), operates from VIN = VREF + 400 mV to 5.5 V, and maintains 0.5% output accuracy across –40°C to +125°C ambient with thermal hysteresis ≤75 ppm and long-term stability of 50 ppm over 1000 hours.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal; enables precise 12-bit DAC/ADC full-scale alignment (e.g., 2.048 V = 1 LSB × 4096) |
| Initial Accuracy | ±0.05% (A-grade); reduces system calibration burden in metrology-grade instruments |
| Tempco | 10 ppm/°C (0°C to 85°C); ensures <±0.08% output drift over industrial temperature range |
| Quiescent Current | 60 µA typical; supports >1-year battery life in always-on portable sensors |
| Dropout Voltage | 175 mV at 10 mA load; allows operation from single 2.5 V supply or Li-ion cell down to 2.2 V |
| Enable Shutdown Current | 3 µA max; enables ultra-low-power sleep mode in energy-harvesting systems |
| Output Noise (0.1–10 Hz) | 190 µVPP; minimizes quantization noise in 16-bit+ data acquisition front-ends |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads; thermally enhanced for 164.1°C/W junction-to-ambient resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - N/C | No-connect | Must remain floating; not internally bonded - PCB trace must be omitted or isolated |
| 2 - GND | Analog ground reference | Low-impedance return path for reference core; requires dedicated ground plane connection |
| 3 - EN | Enable control input | Active-high logic; drives internal pass device; VIH ≥ 65% VIN ensures reliable turn-on |
| 4 - VIN | Input supply | Accepts 2.448 V to 5.5 V; minimum headroom = 400 mV above VREF for regulation |
| 5 - VREF | Precision output | 2.048 V source capable of sourcing/sinking ±20 mA; low-noise node requiring local 100 nF ceramic bypass |
Key Features
| Feature | Design Value |
|---|---|
| EEPROM-trimmed curvature compensation | Eliminates need for external trimming components and achieves laser-trimmed accuracy in CMOS process |
| Capacitor-free stability | Operates reliably with only 100 nF CIN; no COUT required - saves board space and BOM cost |
| 20 mA output drive | Directly drives SAR ADC reference inputs, op-amp bias networks, or small DAC loads without buffer amplifier |
| Automotive qualification (Q1 option) | LM4132-Q1 variant meets AEC-Q100 Grade 1 (–40°C to +125°C) for under-hood sensor modules |
| Low ESD sensitivity | HBM rating of ±2000 V enables robust handling in standard assembly lines without special ESD controls |
Applications
| Portable Multimeter Front-End | Industrial 4–20 mA Transmitter |
|---|---|
|
Use Scenario: Handheld digital multimeter measuring DC voltage with 0.1% basic accuracy and auto-ranging. IC Role / Device Role / Timing Role: Primary reference for 16-bit sigma-delta ADC; sets full-scale range and zero-point calibration baseline. Use Value: 10 ppm/°C tempco and 50 ppm long-term stability eliminate recalibration every 6 months; 190 µVPP noise ensures sub-LSB measurement repeatability. |
Use Scenario: Loop-powered field transmitter converting RTD/thermocouple signals to 4–20 mA analog output. IC Role / Device Role / Timing Role: Stable excitation source for precision current-sense resistor and reference for DAC generating loop current setpoint. Use Value: 60 µA quiescent current leaves >100 µA margin for loop compliance; 175 mV dropout enables operation from 2.4 V rail derived from 24 V loop via LDO. |
| Battery-Powered Data Logger | Medical Patient Monitor Analog Front-End |
|
Use Scenario: Compact environmental logger recording temperature/humidity every 5 minutes using coin-cell battery. IC Role / Device Role / Timing Role: Reference for low-power SAR ADC sampling sensor outputs during brief wake-up bursts. Use Value: 3 µA shutdown current extends 220 mAh CR2032 battery life beyond 5 years; enable pin synchronizes reference activation with ADC conversion window. |
Use Scenario: Portable ECG module digitizing biopotential signals with >100 dB SNR requirement. IC Role / Device Role / Timing Role: Low-noise reference for instrumentation amplifier gain-setting and ADC full-scale definition. Use Value: 190 µVPP (0.1–10 Hz) contributes <0.001% error to 5 mV ECG signal; AEC-Q100 qualified version supports IEC 60601-1 safety-critical design reuse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3020AIDBZR | Fixed 2.048 V, 50 ppm/°C max tempco, 50 µA IQ, SOT-23-3, no enable pin | Lacks shutdown control; lower drive (10 mA); requires external capacitor for stability | Choose when board space is constrained and enable functionality is unnecessary |
| ADR3420ARJZ-R7 | 2.048 V, 10 ppm/°C (A-grade), 120 µA IQ, SOT-23-5, enable pin, ±0.1% initial accuracy | Higher quiescent current; same pinout but different enable threshold (1.2 V fixed vs. %VIN) | Prefer when higher output current (15 mA) and tighter line/load regulation are needed over ultra-low IQ |
Compared with REF3020AIDBZR and ADR3420ARJZ-R7, the LM4132EMF-2.0/NOPB uniquely combines A-grade 0.05% accuracy, 10 ppm/°C tempco, 3 µA shutdown, and capacitor-free operation - making it optimal for portable, high-accuracy, enable-controlled systems where supply headroom is limited.
Availability
LM4132EMF-2.0/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, industrial transmitters, and medical data acquisition systems requiring stable component supply, long-lifecycle support, and automotive-grade variants (LM4132-Q1).
Supply support for LM4132EMF-2.0/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with decades of precision reference design heritage.
The LM4132 family was engineered to deliver laser-trimmed performance in cost-effective CMOS processes for high-accuracy data conversion, sensor conditioning, and portable power-sensitive applications.
FAQ
What is the maximum load current supported by the LM4132EMF-2.0/NOPB?
The LM4132EMF-2.0/NOPB delivers up to 20 mA of output current while maintaining 0.5% output accuracy. This allows direct driving of ADC reference inputs, op-amp bias networks, or small DACs without external buffers - verified across –40°C to +125°C ambient per TI's Electrical Characteristics table for LM4132-2.
Does the LM4132EMF-2.0/NOPB require an output capacitor for stability?
No, the LM4132EMF-2.0/NOPB is internally compensated and stable without an output capacitor. Only a 100 nF ceramic capacitor on VIN is mandatory (CIN). Adding COUT is optional and does not improve regulation - confirmed in the "Simplified Schematic" and "Stable With Low-ESR Ceramic Capacitors" feature bullet of the datasheet.
What is the enable pin logic threshold for the LM4132EMF-2.0/NOPB?
The LM4132EMF-2.0/NOPB enable pin uses ratio-metric thresholds: VIH ≥ 65% of VIN and VIL ≤ 35% of VIN, ensuring reliable operation across its full 2.448 V to 5.5 V input range. This eliminates need for level-shifting when powered from variable supplies like battery stacks or LDO outputs.
How does the LM4132EMF-2.0/NOPB achieve 10 ppm/°C temperature coefficient?
The LM4132EMF-2.0/NOPB achieves 10 ppm/°C (0°C to 85°C) via EEPROM-programmable curvature correction applied to its CMOS band-gap core - compensating for second-order thermal effects post-assembly. This overcomes plastic-package-induced shifts that limit laser-trimmed bipolar references, as detailed in the "Description" section.
Is the LM4132EMF-2.0/NOPB suitable for automotive applications?
The LM4132EMF-2.0/NOPB itself is not automotive-qualified, but its pin-compatible variant LM4132QMFE-2.0/NOPB (Q1 grade) is AEC-Q100 qualified for Grade 1 (–40°C to +125°C ambient), HBM ±2000 V, and automotive reliability testing - enabling drop-in use in engine control, ADAS sensor modules, and infotainment power rails.
LM4132EMF-2.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SC-74A, SOT-753
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.5%
- Temperature Coefficient:
- 30ppm/°C
- Noise - 0.1Hz to 10Hz:
- 190µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.448V ~ 5.5V
- Current - Supply:
- 100µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM4132EMF-2.0/NOPB FAQ
1.How can I place an order for LM4132EMF-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4132EMF-2.0/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM4132EMF-2.0/NOPB reliable?
The price and inventory of LM4132EMF-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4132EMF-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4132EMF-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4132EMF-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4132EMF-2.0/NOPB?
LM4132EMF-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4132EMF-2.0/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM4132EMF-2.0/NOPB?
For technical support, including LM4132EMF-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4132EMF-2.0/NOPB requirements.
6.How does Aetrix verify that LM4132EMF-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4132EMF-2.0/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM4132EMF-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4132EMF-2.0/NOPB?
All LM4132EMF-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4132EMF-2.0/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM4132EMF-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4132EMF-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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